tests/projects: add test for topic_names

adhocracy4/test/factories/__init__.py

@@ -13,6 +13,8 @@
 from adhocracy4.phases.models import Phase
 from adhocracy4.projects.enums import Access
 from adhocracy4.projects.models import Project
+from adhocracy4.projects.models import Topic
+from tests.project.enums import TopicEnum
 
 
 class GroupFactory(factory.django.DjangoModelFactory):
@@ -86,6 +88,35 @@ def moderators(self, create, extracted, **kwargs):
             for user in extracted:
                 self.moderators.add(user)
 
+    @factory.post_generation
+    def topics(self, create, extracted, **kwargs):
+        if not create:
+            return
+        if extracted:
+            for topic in extracted:
+                self.topics.add(topic)
+
+
+class TopicFactory(factory.django.DjangoModelFactory):
+    """Create Topics from the TopicEnum class
+
+    Note: This factory can only create len(TopicEnum) topics because of the unique
+    constraint of the Topic model
+    """
+
+    class Meta:
+        model = Topic
+
+    code = factory.Sequence(lambda n: TopicEnum.names[n])
+
+    @factory.post_generation
+    def projects(self, create, extracted, **kwargs):
+        if not create:
+            return
+        if extracted:
+            for project in extracted:
+                self.project_set.add(project)
+
 
 class ModuleFactory(factory.django.DjangoModelFactory):
     class Meta:

tests/conftest.py

@@ -35,6 +35,7 @@ def image_factory():
 register(factories.UserFactory, "another_user")
 register(factories.UserFactory, "staff_user", is_staff=True)
 register(factories.ProjectFactory)
+register(factories.TopicFactory)
 register(factories.ModuleFactory)
 register(factories.PhaseFactory)
 register(q_factories.QuestionFactory)

tests/projects/test_project_models.py

@@ -145,3 +145,19 @@ def test_is_archivable(project_factory, phase_factory):
         assert not project1.is_archivable
         assert not project2.is_archivable
         assert project3.is_archivable
+
+
+@pytest.mark.django_db
+def test_project_topics(project_factory, topic_factory):
+    project = project_factory()
+    assert project.topic_names == []
+    # delete to clear the cache of the cached_property
+    del project.topic_names
+    topic1 = topic_factory()
+    project.topics.add(topic1)
+    assert project.topic_names == [str(topic1)]
+    # delete to clear the cache of the cached_property
+    del project.topic_names
+    topic2 = topic_factory()
+    project.topics.add(topic2)
+    assert project.topic_names == [str(topic1), str(topic2)]